Acta Oeconomica
Volume/Issue:
Volume 66: Issue 1
The Issue of Macroeconomic Closure Revisited and Extended
Authors:
Ernő Zalai Corvinus University of Budapest, Budapest, Hungary

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Tamás Révész Corvinus University of Budapest, Budapest, Hungary

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Pages:
1–31
Online Publication Date:
Mar 2016
Publication Date:
01 Mar 2016
Article Category:
Research Article
DOI:
https://doi.org/10.1556/032.2016.66.1.1
Keywords:
computable general equilibrium model; closure; neo-classical; neo-Keynesian and structuralist theory of distribution; open economy; C54; C68; O50
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Léon Walras (1874) had already realised that his neo-classical general equilibrium model could not accommodate autonomous investments. In the early 1960s, Amartya Sen analysed the same issue in a simple, one-sector macroeconomic model of a closed economy. He showed that fixing investment in the model, built strictly on neo-classical assumptions, would make the system overdetermined, and thus one should loosen some neo-classical conditions of competitive equilibrium. He analysed three not neo-classical “closure options”, which could make the model well-determined in the case of fixed investment. His list was later extended by others and it was shown that the closure dilemma arises in the more complex computable general equilibrium (CGE) models as well, as does the choice of adjustment mechanism assumed to bring about equilibrium at the macro level. It was also illustrated through several numerical models that the adopted closure rule can significantly affect the results of policy simulations based on a CGE model.

Despite these warnings, the issue of macro closure is often neglected in policy simulations. It is, therefore, worth revisiting the issue and demonstrating by further examples its importance, as well as pointing out that the closure problem in the CGE models extends well beyond the problem of how to incorporate autonomous investments into a CGE model. Several closure rules are discussed in this paper and their diverse outcomes are illustrated by numerical models calibrated on statistical data. First, the analyses are done in a one-sector model, similar to Sen’s, but extended into a model of an open economy. Next, the same analyses are repeated using a fully-fledged multi-sectoral CGE model, calibrated on the same statistical data. Comparing the results obtained by the two models it is shown that although they generate quite similar results in terms of the direction and — to a somewhat lesser extent — of the magnitude of change in the main macro variables using the same closure option, the predictions of the multi-sectoral CGE model are clearly more realistic and balanced.

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Cover Acta Oeconomica
Acta Oeconomica Periodical of the Hungarian Academy of Sciences
Print ISSN:
0001-6373
Online ISSN:
1588-2659

Senior editors

Editors-in-Chief: István P. Székely, Dóra Győrffy

Editor(s): Judit Kálmán

Associate Editors

  • Péter Benczúr, Joint Joint Research Center, European Commission
  • Dóra Benedek, International Monetary Fund
  • Balázs Égert, OECD
  • Dániel Prinz, World Bank
  • Rok Spruk, University of Ljubljana, School of Economics and Business, Slovenia

Editorial Board

  • Anders Åslund, Georgetown University and Advisory Council of CASE, USA
  • István Benczes, Corvinus University of Budapest, Hungary 
  • Agnieszka Chłoń-Domińczak, SGH Warsaw School of Economics, Poland
  • Fabrizio Coricelli, University of Siena, Italy
  • László Csaba, Corvinus University of Budapest, Hungary and Central European University, Austria
  • Beáta Farkas, Faculty of Economics and Business Administration, University of Szeged, Hungary
  • Péter Halmai, Budapest University of Technology and Economics, and National University of Public Service, Hungary
  • Martin Kahanec, Central European University, Austria
  • Michael Landesmann, The Vienna Institute for International Economic Studies (WIIW), Austria
  • Péter Mihályi, Corvinus University of Budapest, Hungary
  • Debora Revoltella, European Investment Bank

Corvinus University of Budapest
Department of Economics
Fővám tér 8 Budapest, H-1093, Hungary
E-mail: judit.kalman@uni-corvinus.hu

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Acta Oeconomica
Language English
Size B5
Year of
Foundation		 1966
Volumes
per Year		 1
Issues
per Year		 4
Founder Magyar Tudományos Akadémia
Founder's
Address		 H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0001-6373 (Print)
ISSN 1588-2659 (Online)

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